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Pak. J. Bot., 44(6): 1919-1922, 2012.

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IDENTIFYING THE MOST PROMISING GENOTYPES IN LENTIL FOR CULTIVATION IN A WIDE RANGE OF ENVIRONMENTS OF PAKISTAN USING VARIOUS YIELD STABILITY MEASURES

Asghar AlI^1*, Muhammad AsIf Masood² and M. Ashraf ZahId¹

Abstract: The present study was aimed to identify the most promising high yielding lentil genotype for a wide range of environments of Pakistan using 8 stability measures. The experiment consisted of 12 lentil genotypes grown at 11 locations falling in different agro-ecological zones of Pakistan for 2 years during 2006/07 and 2007/08 under national uniform yield testing. The General Linear Model (GLM) of MINITAB (version 15) was used for two-way analysis of variance for lentil yield data to examine the total variation into genotypes, environments and genotype x environment interaction. The percent variation of 2 major contributors, environment and GxE interaction, was permissible to perform stability analysis to evaluate stable genotypes across the environments. The genotype x environment interaction means were used for eight stability measures (genotype mean, genotype variance, coefficient of variation, ecovalence, interaction variance, regression slope, deviation mean square, coefficient of determination). The stability measures depicted that the genotype NARC-06-1 with high mean yield (1140 kg/ha^-1), regression slope (1.09) close to unity and less statistics of remaining stability measures except high value of R²  for yield proved to be the best within the pool of studied genotypes. The results clearly suggest that the genotype NARC-06-1 may prove to be a widely adapted high yielding stable variety for a broad spectrum of environments of Pakistan.

¹Pulses Program, National Agricultural Research Centre, Park Road, Islamabad

²Biometrics Program, Social Sciences Institute, National Agricultural Research Centre, Park Road, Islamabad

^*Corresponding author’s e-mail: asgharapk@yahoo.com